portio

[pôrshē-ō′, -tē-ō′]

n. pl. por•ti•o•nes (-shē-ōnēz, -tē-)

A part or segment, as of an organ.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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Historical Examples of portio